{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-87876 exists.","fix":"Apply the vendor's patch.","what":"CVE-2026-87876 is a low-severity authentication bypass vulnerability in Red Hat Enterprise Linux 10, published on 9 Sep 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-87876 and fix it if it is affected.\n\nWhat it is: CVE-2026-87876 is a low-severity authentication bypass vulnerability in Red Hat Enterprise Linux 10, published on 9 Sep 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-87876 exists.\n\nAffected product: Red Hat Enterprise Linux 10. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-87876/ (Markdown: https://insights.sbomify.com/CVE-2026-87876/index.md)","id":"CVE-2026-87876","markdown":"https://insights.sbomify.com/CVE-2026-87876/index.md","name":"CVE-2026-87876","record":{"aliases":["AZL-100923","BELL-CVE-2026-87876","DEBIAN-CVE-2026-87876","ECHO-0636-b260-0d3d","GHSA-r8jp-q6fh-g5r2","RHSA-2026:67568","UBUNTU-CVE-2026-87876"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["security_bypass"],"network_reachable":"adjacent_or_local","non_default_config":true,"product_category":"CUPS printing server","requires_auth":"low_privilege","summary":"Attackers can bypass username-based access controls in CUPS scheduler paths due to case-insensitive comparisons, potentially accessing restricted printer resources.","user_interaction":"required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[],"cvss":{"score":3,"severity":"low","source":"cna","vector":"CVSS:3.1/AV:A/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-178","name":"Improper Handling of Case Sensitivity"}],"description":"Two case-insensitive comparisons on request-derived usernames outside the main authorization path in CUPS's scheduler (printer ACL validation and private-attribute filtering) could allow bypass of username-based access controls in certain configurations.","ecosystems":["Red Hat:hummingbird:1"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"Auth bypass in Red Hat Enterprise Linux 10","id":"CVE-2026-87876","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"auth_bypass","year":"2026"},"n_packages":8,"n_references":6,"next":{"headline":"zstd-jni 1.3.8-4 through 1.5.7-13 Use-After-Free via Setters Called After close()","id":"CVE-2026-87877"},"packages":[{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:2.4.19-4.2.hum1"],"introduced":["0"],"last_affected":[],"package":"cups","purl":"pkg:rpm/redhat/cups","source":"RHSA-2026:67568"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:2.4.19-4.2.hum1"],"introduced":["0"],"last_affected":[],"package":"cups-client","purl":"pkg:rpm/redhat/cups-client","source":"RHSA-2026:67568"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:2.4.19-4.2.hum1"],"introduced":["0"],"last_affected":[],"package":"cups-devel","purl":"pkg:rpm/redhat/cups-devel","source":"RHSA-2026:67568"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:2.4.19-4.2.hum1"],"introduced":["0"],"last_affected":[],"package":"cups-filesystem","purl":"pkg:rpm/redhat/cups-filesystem","source":"RHSA-2026:67568"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:2.4.19-4.2.hum1"],"introduced":["0"],"last_affected":[],"package":"cups-ipptool","purl":"pkg:rpm/redhat/cups-ipptool","source":"RHSA-2026:67568"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:2.4.19-4.2.hum1"],"introduced":["0"],"last_affected":[],"package":"cups-libs","purl":"pkg:rpm/redhat/cups-libs","source":"RHSA-2026:67568"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:2.4.19-4.2.hum1"],"introduced":["0"],"last_affected":[],"package":"cups-lpd","purl":"pkg:rpm/redhat/cups-lpd","source":"RHSA-2026:67568"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:2.4.19-4.2.hum1"],"introduced":["0"],"last_affected":[],"package":"cups-printerapp","purl":"pkg:rpm/redhat/cups-printerapp","source":"RHSA-2026:67568"}],"prev":{"headline":"Cups: openprinting cups: heap out-of-bounds read in cupsutf32toutf8() via missing source-length bound","id":"CVE-2026-87875"},"products":["Red Hat Enterprise Linux 10","Red Hat Enterprise Linux 6","Red Hat Enterprise Linux 7","Red Hat Enterprise Linux 8","Red Hat Enterprise Linux 9","Red Hat Hardened Images","Red Hat OpenShift Container Platform 4"],"published":"2026-09-09","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"Red Hat","prefix":"RHSA"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-10-21","vendors":["Red Hat"]},"summary":"Attackers can bypass username-based access controls in CUPS scheduler paths due to case-insensitive comparisons, potentially accessing restricted printer resources.","url":"https://insights.sbomify.com/CVE-2026-87876/"}